Nventor



A. KUHN.

GOWL

(No Model.)

No. 592,791. Patented Nov. 2, 1897.

INVENTEIR 56%;

UNITED STATES PATENT QFF CE.

ALBIN KIlHN, OF HEIDELBERG, GERMANY.

COWL.

SPECIFICATION forming part of Letters Patent No. 592,791, dated November 2, 1897.

Application filed January 6, 1897. fierial No. 618,172. (No model.)

To all whom it may concern:

Be it known that I, ALBIN KiiHN, architect, a subject of the Grand Duke of Sachsen-Altenburg, and a resident of Heidelberg, in the Grand Duchy of Baden, Germany, have invented certain new and useful Improvements in Oowls, of which the following is a full and clear specification.

My invention relates to cowls, and has for its object weatherproof and draft-increasing crowning for single chimneys and chimney groups with leading planes and ribs.

In the accompanying drawings, Figure 1 is a plan view of the crowning for a rectangular single chimney. Fig. 1 is a perspective view of the same. Fig. 2 is a plan view of the crowning for a chimney group. Fig. 2 is a per spective view of part U of the group-crowning. Fig. 3 is a plan view of the improved crowning in combination with a circular millchimney. Fig. 3 is a vertical section of the same. Fig. 4 is a perspective view of a side joint, and Fig. 4 is a horizontal section of the same.

The improved crowning, which forms the continuation of the chimney-walls, consists of a hollow body, open at its lower end, and is made of burned and glazed stoneware,burnt clay, cement, or the like. At the outer side the crowning is provided with curved surfaces S for turning off vertically-strikin g pufis of wind, and, moreover, it has leading-ribs R, taking the direction of the center.

Figs. 1 and l show the improved crowning for a single chimney, made of a sole-piece and having side and diagonal ribs R, between which are disposed the curved surfaces S. The effect of those surfaces and ribs is increased by their sharp edges hindering the accumulation of snow and ice to reduce the efficiency of the contrivance.

The combination of a crowning of difierent parts for chimney groups is illustrated in Fig. 2. This combination is composed of side parts T or corner parts E, middle parts U, and tongues Z. The latter are preferably made without ribs. The single parts are assembled by means of a mortar side joint F,

as illustrated in Figs. 4 and 4". That'side the curved form of the leading surface S,such

giving the mortar-joint a well-protected and elevated position and permitting, moreover, in all cases a good filling of joint.

As it may be seen from Fig. 2 the abutting sides of the single parts are still provided with vertical grooves N for the purpose of giving better hold to the joint-mortar, especially in glazed material. In connection with the practical exterior form of the joints this disposition makes it possible to connect the parts by very small or by enlarged joints,

as required, in order to crown chimneys of different heights with the same number of' parts of the same length. That circumstance makes the new crowning especially practical for circular mill-chimneys. As illustrated in Fig. 3, the curved single parts U of equal length are provided with a middle rib R. The groups of sections or caps I have ordinary mortar-joints F, while the groups of sections L have enlarged joints F, these latter sections with their joints completing the circuit and making it continuous or without a break. The core of those joints F is formed of beton, while their exterior is filled up in the common, way.

As it is generally impossible to give millchimneys an entire covering because of their great dimensions, the present improvements offer a very suitable crowning for them.

Having thus described and ascertained the nature of my said invention, what I claim as new, and desire to secure by Letters Patent, 1s-

1. A chimney cowl comprising the upwardly extending walls having concaved outer surfaces inclining to the cowl-opening and the leading-ribs dividing said concave surfaces, substantially as described.

2. A cowl comprising a seriesof sections, each section having concaved outer surfaces inclining upwardly to the cowl-opening and having also the leading-ribs, substantially as described. I

3. A cowl comprising the sections having the outer concaved surfaces inclining upwardly to the cowl-opening and having the joint-ribs A and leading-ribs, substantially as described.

4. A cowl comprising the sections having the joint-ribs A and the grooves N, said Signed at Mannheim this 22d day of De grooves being between the meeting faces of cember, 1896. the sections, substantially as described.

5. A cowl of rectangular form having cor- ALBIN KUHN' 5 ner-sections and side sections, said sections \Vitnesses:

having concaved outer sides and the leading- WILI-IELM NURNsEER, ribs, substantially as described. CARL Loos. 

